Title/Qualifications: PhD
Biochemistry and Biotechnology
Contact Address:
Kenyatta University, P.O. Box 43844-00100, Nairobi, Kenya

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Position: Lecturer
Area of Specialization: Medical Physiogy, Medical biochemistry
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Research Interests: Neural sciences: Pain, inflammation and fever


  • Wabai W. Yvonne., Mwonjoria J.K.M and Ngeranwa J.J. (2019) Teratogenic Effects of Carissa spinarum Stem and Root Extracts in Swiss Albino Intern J. phytopharmacology ( in press)
  • Siangu B. N, Swaleh S, Mwonjoria K J and Njue W. N. (2019) Antioxidant activity, total phenolic and flavonoids content of selected Kenyan medicinal plants, sea algae and medicinal wild mushrooms African Journal of Pure and Applied Chemistry, 13(3): 43-48. DOI:10.5897/AJPAC2018.0775. ISSN: 1996 – 0840
  • Wabai W. Yvonne, Mwonjoria J.K. Maina, Njagi E. Mwaniki (2019)Teratogenic potential of Urtica massaica (Mildbr.) and Croton megalocarpus (Hutch) in mice. The Journal of Phytopharmacology 7(6) 460-463. ISSN 2320-480X
  • Wambugu E.N., Maina G.D., Onyango W.A., Wafula A.W., Ngeranwa J.N. & Mwonjoria J.K.M. (2018) Antinociceptive and anti-inflammatory effects of flavonoids rich fraction of Solanum incanum (Lin) root extracts in The Journal of Phytopharmacology, 2018;7(4):399-403
  • Mwonjoria JK et al. (2017) Poster presentation in the 13th International Meeting Society of Neuroscientists of Africa (SONA) in Entebbe Uganda.
  • Mwonjoria, M., Juma, K. K., Ngugi, M. P., & Njagi, E. (2017)Evaluation of analgesic, anti- inflammatory and toxic effects of Lantana camara International. J. Phytopharmacology
  • Mwonjoria JKet al. (2016) Preclinical evaluation of antinociceptive and inflammatory effects of aqueous extract of Solanum incanum (Lin). Poster presentation at the 16th World congress of pain. International Association for the Study of Pain. in Yokohama, Japan
  • Mwonjoria K. John, Umar Aliyu, Juma K. Kevin, Kahiga M. Titus, Ngugi M. Piero, Mburu David, Wanyonyi W. Alphonse, Githinji G. Charles, Ngeranwa N. Joseph Anti-inflammatory activity of Craterostigma pumilum (hochst) is associated with hyperalgesia. International Journal of Pharmacology and Toxicology 4 (2):169-173
  • Kamau JK, Nthiga PM, Mwonjoria JK, Ngeranwa JJN, Ngugi MP (2016) Anti-Inflammatory Activity of Methanolic Leaf Extract of Kigelia Africana (Lam.) Benth and Stem Bark Extract of Acacia Hockii De Wild in Mice. J Dev Drugs 5: 156. doi:10.4172/2329-6631.1000156
  • Kamau, K., Nthiga, P. M., Safari, V. C., Njagi, S. M., Mwonjoria, J. K., Ngugi, M. P., & Ngeranwa,
  • (2016). Antipyretic Properties of Methanol Stem Bark Extracts of Acacia hockii De Wild and Kigelia africana (Lam) Benth in Wistar Rats. Journal of Pharmacognosy & Natural Products, 2:3. ISSN: 2472-0992.
  • Aliyu Umar, Ngugi M Piero, ... Mwonjoria K John (2016) In Vitro Anti-Acetylcholinesterase Activity of Crude Fruits Sap Extractof Solanum incanum in Green Peach Aphids Journal of Developing Drugs, 4 (5)1000142. ISSN: 2329-6631 JDD an open access journal.
  • Aliyu Umar, Ngugi M Piero, ... Mwonjoria K John (2016) Department of Biological Sciences, Bauchi State UBio Efficacy of Aqueous Crude Fruit Sap Extract of Solanum incanum against Green Peach Aphids Myzus persicaeSulzer (Homoptera: Aphididae) Journal of Entomology, Ornithology & Herpetology, 5(1). ISSN: 2161-0983 EOH
  • Mworia JK, Gitahi SM ... Mwonjoria K. J et al. (2015) Analgesic potential of acetone leaf extract of Caesalpinia volkensii Harms in mice Pharmaceutica Analytica Acta, 6:450. doi:10.4172/2153- 1000450
  • Mworia JK, Gitahi SM ... Mwonjoria K.J et al. (2015). Antinociceptive Activities of Acetone leaf Extracts of Carissa Spinarum in Mice. Med Aromat Plants S, 1, 2167-0412.
  • Njagi J M, Gitahi S M, Mwangi B M, Mworia J K, Juma K K, Aliyu Umar, Mwonjoria K J, Njoroge W Ann, Ngugi, M P & Njagi NE. 2015. Determination of hematological effects of methanolic Leaf Extract of Vernonia lasiopusin Normal Mice. Journal of blood and lymph 5:3. Article under press
  • Muriithi, N. J., Maina, G. S., Mugendi, N. M., Maina, M. B., Kiambi, M. J., Kelvin, J. K., ... Mwonjoria (2015). Determination of Hematological Effects of Methanolic Leaf Extract of incanum in Normal Mice. Pharmaceutica Analytica Acta, 6:10.
  • Mwangi B. Maina, Gitahi S. Maina, Njagi J. Muriithi, Mworia J. Kiambi, Aliyu Umar, Mwonjoria K. John, Ngure Mutero, Juma K. Kelvin, Njoroge W. Ann, Mburu N. David and Ngugi M. P. 2015.
  • Antinociceptive Properties of Dichloromethane:Methanolic Leaf Extracts of Caesalpinia volkensii and Maytenus obscura in Animal Models. Journal of Pain Relief 2015, 4:4
  • Mwangi B. Maina, Gitahi S. Maina, Njagi J. Muriithi, Mworia J. Kiambi, Aliyu Umar, Njoroge W. A, Mwonjoria K. John, Ngugi M. Piero, Mburu N.David. 2015. Anti-inflammatory properties of dichloromethane: methanolic leaf extracts of caesalpinia volkensii and maytenus obscura in animal International J. of Current Pharmaceutical Research. 7(15) 83-87.
  • Gitahi S.M., Juma K.K., Mwangi B.M., Njagi J.M., Mworia J.K., Aliyu U., Mwonjoria K. J., Njoroge A., Mburu N.D., Ngugi M.P. 2015. Antinociceptive properties of dichloromethane: methanolic leaf and root bark extracts of Carissa edulis in rats. The Journal of Phytopharmacology (Pharmacognosy & phytomedicine), 4(2): 106-112.
  • Gitahi S. M., Mwangi B. M.,, Njagi J. M., Mworia J. K., Juma K. K., Aliyu U., Mwonjoria K. J., Njoroge W. A., Ngugi M. P., Mburu N. D. 2015. Antipyretic Properties of Dichloromethane: Methanolic Leaf and Root Bark Extracts of Carissa edulis in Rats. Asian Journal of Biomedical and Pharmaceutical Sciences, 5(43):12-20.
  • Juma K.K, Maina S.G., Muriithi J.N., Mwangi B.M., Mworia K.J., Mwonjoria M.J., Ngeranwa J.N. and Mburu N.D. 2015. Protective effects of Urtica dioica and cimetidine® on liver function following acetaminophen induced hepatotoxicity in mice. Journal of Developing Drugs, 4 (1): 1-7.
  • Mwonjoria J K et al., 2014. Suppression of nociception by incanum (lin) is associated with anti- inflammatory activity. Journal of Phytopharmacology (Pharmacognosy & phytomedicine) 3(3):156- 162
  • Mwonjoria john K et al., 2014. Ethno medicinal, phytochemical and pharmacological aspects of S. incanum (lin.) Intern J. Phytopharmacol and Toxicology. 2: 2
  • Kariuki HN and Mwonjoria JK, 2013. Ethnomedicinal, Phytochemical and pharmacological profile of genus Phytopharmacology 4(2): 259-268
  • Mwonjoria JK et al., Antinociceptive, antipyretic effects of S. incanum in animal models.International. J. Phytopharmacology 2: 22-26

Seminars attended

  • IUPS/AD Instruments/LASEC workshop held at University of Nairobi, Chiromo Campus, KENYA 25th and 26th July, 2008.
  • Data Acquisition and Analysis for Life Science Research and Education, Chiromo Campus university of Nairobi, April 2010.
  • Power point presentation at the D Graduands Seminar in Kenyatta university held on 2rd December 2016
  • Sensitization on people living with disabilities at Kenyatta University
  • Training on ISO certification 27000 at Kenyatta University
  • Safety and Anti-terrorism Preparedness Training in June 2018
  • Training of the trainers on Applied Entrepreneurship Education Programme at Chandaria BIIC executive Kenyatta University, May-June 2018

Professional body

  • Member International association of Pain study
  • Member of Kenya Physiological Society
  • Member of Kenya Society of basic and applied pharmacology